Conditioning of yarn



Nov. 14, 1933. c. F. DULKEN 1,935,261

CONDITIONING OF YARN Filed May 20, 1932 3 Sheets-Sheet l C. 9 Dal/(eVWm/M Nov. 14, 1933. c. F. DULKEN 1,935,261

I CONDITIONING OF YARN Filed May 20; 1932 I5 Sheets-Sheet 2 3Sheets-Sheet 5 Nov. 14, 1933. c. F. DULKEN CONDITIONING OF YARN FiledMay 20, 1932 Jaw c ZELMA? mi m Patented Nov. 14, 1933 airs 1,955,261 vCONDITIONING oF-Y'AiiN chimes Friedrich Dulken; Arlingtom'N; VJ:

Application May 20, 1932,

s in Germany June 3,

11 Claims. rol}. zs' -ss) This invention relates to a method of andapparatus for the Conditioning of yarn. It is known to moisten the yarnI, have been prepared in the spinning mill, because the yarn becomesvery dry owing to the spinhing process. The moistening is necessary inor der that the yarn may retain its properties independently of the timeof year, the locality, the

durationoi storage, and any alteration in temperature. It is alsoalready known to add to the moistening liquid an anticeptic orpreserving addition. Great difficulties have hitherto been experience'din attaining a complete and'uniform' penetration of the yarn bobbin bythe moistenmg liquid. V l

In my co-pending United States patent application No. 422,273 of 21stJanuary, 1930, I have already proposed a method and apparatus accordingto which the yarn bobbin is wound 2 upon a hollowperforated core, andthe liquid, or' a mixture of air and liquid is forced outwards fromtheinterior of the bobbin through the body of yarn. In the apparatus anumber of yarn bobbins are treated simultaneously, and are connected toa common liquid supply pipe.v This apparatus has the disadvantage that adistribu tion of the liquid to each individual body of yarn in equalquantities is difficult to attain.

The present invention supplements that mething liquid for eachindividual yarn bobbin and forcing it through the body of yarn by meansof compressed air. ceives'exactly the desired moistening, as a resultimproved. a

The process is'preferably carried out by the measured quantityof liquidbeing sucked up by the compressed air, whereupon the mixture of liquidand air penetrates through the body of yarn. The liquid may howeveralternatively be moved forward-by compressed air acting upon it frombehind. A combination of these two methods is alsopossible. r I In thecase of the method set forth in my copending application the liquidpenetrates through the body of yarn in an outward direction. Accordingto the present improvement the liquid may alternatively flow inwardsfrom the outside. The apparatus for carrying out thisprocess ischaracterized by the fact that for each individual yarn bobbin there isprovided a measur-' ing vessel which is tobe filled from a reservoir,and flOfil'WhiCh a pipe leads to the carrying body bundles or bobbinswhich I ed by measuring a definite quantity of moisten- Each bobbintherefore re-' of which the quality of the product is greatly Serial No.612,612, and

that re'cive's the bobbin, to which a separate compressed air pipe-alsoleads in each instance.

The apparatus-is'preferably so designed that the liquid-pipe openscentrally in the interior of thecompressed air pipe by means of a nozzlein the manner of an injector, the mouthpiece of the injector being atthe same time constructed in'its upper portion as a carrying seat forthe bobbin of yarn. While the apparatus according to my other invention,mentioned aboveyis in tended for the simultaneous treatment of a pm;rality of'yar'n bobbins, by the present-improvement a device is providedwhich islapp'licable both for'the reception and treatment of apinra-lity of yarn bobbins and'also for the reception and treatment of"a single yarn bobbin. This constructional form" is" particularlysuitable for operating on a small scale.-* Further details of theinvention will be gathered'fro'm thefollowing description and from thedrawings and claims. 5 The invention is'illustratedin variousconstructional examples in the accompanying drawings; in'which' f. 1.Figure 1 is a longitudinal section through ap paratus' according tothe'invention for treating; a single bobbin of yarn, theliquidbeingforced' outwards from the interior 'ofjthe bobbin.

Figure 2 is a similar longitudinal section of'a form of construction inwhich'the liquid flows inwards from the outside; v I 1 Figure 3 is adiagrammatic side view of' apparatus according to the invention for thetreatment of a plurality of yarn bobbins. i v, Figure 4 isa diagrammaticfront view thereof, and Figureb is a. diagrammatic plan thereof.

Figure- 6 is a. longitudinal section through an' individual moistener ofthe apparatus shown in Figures? to 5. I Fig. 6a is a fragmentary sideelevational detail of the arrangement shown in'Fig. 6 showingparticularly the use of av bar with 'a plurality of moisteners; 1

Figure 7 is a similarlongitudinal section of another constructionalform,-and Figure 8 is aplan' of apart of Figure '7. The. constructionalform of. the invention shown Figure l is intended for the treatment of asingle bobbin. The individual treatment" is particularly advantageouswhen it is a: question ofimoistening rather large bodiespof' yarn,particularly cross wound bobbins or -.c onical bobbins, The apparatusaccording toFigure 1 is I also suitablefor operation on a smaller scale.

The moistening medium is supplied through 110 piping 1 from a measuringvessel. The contents of the measuring vessel may be adjusted in a knownmanner by means of a plunger, a diaphragm or otherwise.

The piping 1 opens in the foot 2 of themoistener, by means of a nozzle3, which stands centrally in the vertical axis of the apparatus. Intothe cavity in the foot 2 there opens at the side a pipe 4, whichsupplies compressed air, and is equipped with a control valve or cock 5.The foot 2 of the apparatus is continued upwards in a spindle 6, whichis designed to carry the bobbin of yarn. The spindle 6 has a centralbore at the lower end, and is provided with lateral outlet apertures '7.The entire arrangement acts as an injector. The yarn bobbin consists ofan inner tube or sleeve 8, perforated on its periphery, made ofcardboard or other suitable material, and the body of yarn 9 wound uponthis tube. The inner tube 8 is mounted in a fluid-tight manner at thebottom upon a conical transition part of the spindle 6. The spindle 6and the tube 8 might alternatively be made conical throughout as shownfor example in Fig. 7.

From the foot 2 of the nioistener there extends sideways and upwards anarm 10, which is provided at the top with two positioning rings 11.Between these rings a bush or sleeve 12 is retatably but non-slidablyfitted. To a pin 13 on the bush 12 is pivoted a plate 14, to the underside of which is secured a sealing stopper 15 of indiarubber or thelike. The stopper 15 bears upon the upper end of the yarn tube 8 in theworking position and closes it in a fluidtight manner. To the bush 12 isrigidly secured a carrying arm 16, which has at its free end a pivot 17for a hand lever 18. The pivot 17 is located approximately in thelongitudinal axis of the spindle 6. With the lever 18 a cam 19 isintegral, which acts against the pressure plate 14. The cam 19 is soshaped that when the hand lever 18 is rotated in a clockwise directionit acts first as an eccentric upon the plate 14, and thereby presses thetube 8 down firmly and seals it at both ends. Upon further rotation ofthe lever 18 the cam 19 passes over the plate 14 with a portion of itssurface which is concentric with the pivot 17, so that the pressure uponthe yarn bobbin is no longer increased, but

- the lever locks itself. Upon still further rocking,

the lever 18 pushes against a control rod 20, which is longitudinallyslidable in a guiding arm 21. secured to the foot 2, and presses thisrod downwards. The lower end of the control rod 20 is pivotallyconnected with the positioning lever of, the valve 5, so that the valveis opened. At the same time a spring 22 is compressed.

' The apparatus acts in such a way that, after the mounting of the yarnbobbin to be moistened, the sealing of. the sleeve 8 at the top andbottom is first effected, and only then is the compressed air pipe 4opened. The'compressed air flows out and sucks up the liquid from themeasuring vessel, whereupon the mixture of liquid and air moves throughthe bores of the spindle 6 and the perforations of the sleeve 8 into theyarn body 9, which it penetrates radially outwards from inside. Only theliquid specially measured for this one bobbin is sucked up and forcedthrough, so that the bobbin is moistened exactly to the extent desiredin all its parts. An excellent eifect is thereby produced. 7

Furthermore the operation of filling and emptying the measuring'vesselmay be positively connected, in a manner known in itself, with the acommon liquid measuring device, which may actuating of the lever 18 andthe control rod 20, in such a way for example that when the lever 18 israised, that is to say, when the air valve is closed and the yarnbobbins released, a measuring vessel of adjustable capacity is filledwith the moistening liquid, and when the lever 18 is depressed, that isto say, when the body of yarn is pressed down and the air valve isopened, the measuring vessel is emptied into the liquid pipe. Thefollowin arrangement is also advantageous.

the purpose of increasing the production two of the individualappliances described are placed side by side and are operatedalternately by one worker. These two appliances then have be providedwith two measuring chambers, separated by a diaphragm, actuatedalternately, and adapted to be connected in a manner known in itselfwith the two moistening appliances. The constructional form according toFigure 2 is distinguished from the one described by the fact that theinoistening liquid does not flow through the body of yarn in an outwarddirection from the inside but in the opposite direction. The lowerportion or" the moistener agrees with that of Fig- The pipe for theliquid is marked 31, the outlet nozzle the compressedair pipe 34, andthe control valve thereof 35. The foot 82 of the device widens out in anupward direction to a cylind ical or other casing, which may have adouble wall. In thelatter case the outer wall 36 not perforated, whilethe inner wall 3'? andfthe inner bottom 38 are provided with numerousperforations. The lid 39 of the casing, which closes in a fluid-tig-.tmanner all round, is hinged, and has in the middle on its under side astopper or plug 40 of indiarubber or the like. The lower end of the tubel1 bears in a fluid-tight manner upon a projection 42 in the base of thecasing. The stop er 40 is longitudinally bored through, and the lid 39is bored through in the middle. These bores form an air vent. On theside of the easing 36 a lever 43 is rotatably mounted about a pivot 44.The lever 43 is equipped with a hook d5, which can engage over a pin 45which is carried by two lateral lugs or projections on the lid 39. The45 is again eccentrically shaped in sucha way that it at first tends topress the lid 39 down firmly when the lever 43 is moved in ananti-clockwise direction. The inner portion of the hook i5 is howeverconcentric with the pivot i l. The lever i3 is again connected by acoupling rod 4:7 with the lever 48 of the valve 35.

After the bobbin of yarn has been inserted in the container the lid 39is closed. This may be 139 provided round the margin with sealing means,39 2). The vessel is hereby sealed while the indiarubber stopper (10 atthe same time presses down the tube 41 of the yarn bobbin against theprojection 42 so as to close the lower end of the tube in a fiuid-tightmanner. Only after this has been done is the valve 35 opened, by furthershifting of the lever 43. The comed air sucks in the inoistening liquid,and the mixture passes into the hollow space between outer wall 36 ofthe vessel and the inner wall and. bottom 37 and 38. The escapingmixture penetrates through the body of yarnin an inward direction, theair present in the vessel and in the body of yarn being able to escapethrough the duct in the indiarubber stopper ill. The body of yarn istherefore again accurately moistened to the desired extent.

After the termination of the moistening, and before the lid 39 is openedagain, any pressure pregear-for tilting the distributor 56, arepreferably j cell in the vessel 56.

this foot theliquid pipe. 58 opens.

this. pipeis closed by. an exchangeablennozzlep63.:

vailing in.-.the interior of the .vesselmaypreferably be relaxedz... 3;1

The form or construction of the-invention illus trated in Figures. 3to." Ms intended for the simultaneous treatment. ofa plurality ofbobbins of yarn. .The main partsare only diagrammatically indicated;.- IFrom a reservoir themoistening liquid flows to a measuring vessel 51*,bynatural descentfor example; 1

From the measuring .vessel 5l.the liquid passes i-ntoggar'i'elongateddistributing vessel-52,:which is subdiv'idedby partitions into a ratherlarge .num-.' ber of individual cells or compartments: 51. For each yarnbobbin one such :cell'53; is provided. The-"partitions'i-a'reinterrupted at their lowest points-by apertures 54,-so that the liquidadjustsitself to the sameheight in all thecells 53v by theprinciple ofcommunicating tubes.. Eachcell .53 i's'providedat the top withv alittlepouringtub 55.: TheYdistributingpvessel is lodged in :a longrcceiving'vessel 56 and. is rotatable about its'longitudinal. axis. Thereceiving vessel 56 is alsosubdividedby partitions 5.7 into individualcells equal in number to thecells 53. From each of these cells a' pipe58 leads to a different moistener upon the machine frame; When thevessel 52 is tilted about its longitudinal axis. each cell- 53 .poursits contents, which are equalin every case, into a To each yarn bobbinthere is therefore supplied by its particular pipe58 exactly the sameaccurately measured, quantityoi liquid; z V

:The moistenersthemselves are indicatedas a:

1 whole. in Figures 3 to. 5 by 59, and: are arranged in. three parallelstraight rows; The connecting pipes 58 whichqconvey the liquid to themoisteners 5.9,"are 'shownbroken' off in Figure 4 for the sake ofclearness,.while in Figure 5 only a few of them are shown The pipes 58open in the feet of. the individual; moisteners. in the mannerillustrated at. l; and 31':respectively in. Figures 1 and 2. To the feetof thenmoisteners there also lead the, compressed-air pipes.60,. whichare suppliedwith air by a main pipe.

' Figure 6 shows thearrangem'ent of. anindividual moistenen: By 61- isillustrated a horizontal bar .of the machine .frame,. on to'which thefoot 62 .ofrthe moisteneris secured witha'screw. In The. end of The.nozzle63lis again locatedin a chamber in,

the manner. of. anfinjector, in which theresfur-j I thermoreopenslaterally. the compressed air pipe; 1 60.. LID the latter may beinterposed a valve 64;

which establishes communication with the. main pipe 92. is again screwedat the top a longitudinally. bored spindle. 65, over which theperforated. tube..66 of the yarn body 67-is slipped. Thetube .66 ispressed firmly onto its seat by a bar. 68, with an india-: rubberstopper 69. The bar68 runs longitudinally through the machine andservesat the samev time for pressing, down a plurality of yarn tubeszas in.--dicated diagrammaticallyinFig. 6a; .When the compressedair pipe '60opens,- the air sucks inthe quantity of liquid poured. out in. thedistributor 56. and forces it through itoutwards through the body of,yarn from the interior.

The various'cocks of theplantfahd also the coupled together in such away"that the entire operation proceeds in the prescribed sequence; For thispurpose there-is supported onthe-machine frame a shaft -90, withahandwhe'el- 91 and- Upon the base. body 6210f themoistener this shaftisconnected' by gearing. 94iand sprocket wheelsv95-andxchain 96 with therotatable stem 97*of the valve which controls the-passage ofliquid fromthe tank 51 to the tiltable vessel '52, the. arrangement of the gearing,sprocketand chain" wheels being such that on' every fourth revolution ofthe'hand' wheel 91 the valve will be opened. In, addition bevel gearing98 is provided between theshaft 90. and the sprocket and chaindevicalOUxwhich is cormected with the tiltable' vessel :52 so as toensure of :the proper tilting of this vessel in timed relation with theoperationof the valve 90. Another sprocket andchain connection 100 isprovided between the shaft90 and thevalve 101 which controls the passageof compressed air through the compressed air pipe;

Further gearing 102 is provided between the shaft" 90 and the stem ofthe valve 103 which controls the passage of compressed air from the pipe92. tothepipes 58. By continuing the rotation of the hand-wheel 91 thefollowing operations are positively brought about in their0rder:-Mea's*- urement of the quantity of liquid requiredffo'r onecharging of the'machine in the measuring vessel 51; dischargingthecontents'of'the measur ing vessel 51 intoithedisziributingvessel 52;tilt-1 ing the distributing vessel; opening the compressed air' pipes60'; and ventilating the air pipes after completely. forcing the'liquidthrough the bodies of yarn, in order that the airipipesi may be readyfor. the'next operation. By thispositive" successionof the individualoperations by'means of. a. main controlling mechanism, faults in Op-fcrating are. avoided. Pr'eferably eachrevolution ofthe hand-wheel '71brings about a distinct operation. y

In Figures '7 and}; isi'llustrated a construe tional form of moistener,which is primarily sult-v able for conical yarn'bobbins. ,Theconicalspindle .70. is again secured with a screw upon the foot 62 of themoistener, as illustrated in Figure 6. The spindle islongitudinaliyibored but 'isclosed at the top. Moreover a number ofradial bores 'll'lead' outwards'with a downwardinclina-" tion.. The yarntube =72 is provided With'suitable perforations '73, which'arepreferably somewhat larger than the ducts 71. The yarn tube '72ismounted in a fluid-tight manner upon the spindle? '70, and is for thispurpose pressed onto it. i This has the advantage that. the interior ofthe yarntube '72 remains dry, and thewhole of the mois tening. liquidpenetrates directly "into the yarn body 974. In order that: the holes 73may be exactly overthe'holes 71 the yarn tube 72 is provided' at thebottomin itsperipheral surface with a recess which engages over atransverse.- pin '76 on the spindle '70. I

Since the raised internal pressure durin'gthe moisteningi tends to liftthe yarn' bobbin off the spindle 70 a special device is provided forholdingthe yarn tube firmly on the spindle. The drawings illustrate-thefastening device, which consists of grippers 77, which are rotatablymount ed. at thelbottom of the spindle '70; and which can engage'withtheir upperhooks in apertures 78inthe peripheralsurface' of the yarntube-"72. The grippers" '77 are double levers, the lower armsof whichslide in eccentric slots 79 ina positioning disc 80. -By rotating thedisc through a small angle upon the :foot of'the spindle '70 theyarntube 72-can thus be firmly pressed on to the divided at the top intotheliquid pipes 58. When the liquid hasbeen distributed into the pipes58, air pressure can be admitted behind the liquid columns by openingthe pipe 93. This pressure effect may be added to the injector-likesuction effect of the pipes 60. The arrangement may of course be suchthat only the pressure effect behind the columns of liquid comes intoaction.

The discharge of the air from the pipe 93 into the distributing vessel56 is prevented by nonreturn valves 58 in the pipes 58 showndiagrammatically in Fig. 3.

I What I claim is:

. 1. Apparatus for conditioning yarn wound into bobbins, comprising ameasuring vessel for each individual yarn bobbin, areservoir forsupplying moistening liquid to the individual measuring vessels,carrying bodies for the individual yarn bobbins, separate pipes forconveying liquid from the individual measuring vessels to the individualcarrying bodies, and separate compressed air pipes leading to theindividual carrying bodies.

2. Apparatus for conditioning yarn wound into bobbins, comprising ameasuring vessel for each individual yarn bobbin, a reservoir forsupplying moistening liquid to the individual measuring vessels,carrying bodies for the individual yarn bobbins, separate pipes forconveying liquid from the individual measuring vessels to the individualcarrying bodies, and separate compressed air pipes lea-ding to theindividual carrying bodies, the pipes for liquid opening centrallyinside the compressed air pipes in such a manner as to form injectors, acarrying seat for the yarn bobbin on the upper part of each of thecarrying bodies, and an injector mouthpiece adapted to discharge air andwater through the carrying seat.

3. Apparatus for conditioning yarn wound into bobbins, comprising ameasuring vessel for each individual yarn bobbin, a reservoir forsupplying moistening liquid to the individual measuring vessels,carrying bodies for the individual yarn bobbins, separate pipes forconveying liquid-irom the individual measuring vessels to the individualcarrying bodies, and separate compressed air pipes leading to theindividual carrying bodies, the pipes for liquid opening centrallyinside the compressed air pipes in such a manner as to form injectors, acarrying seat for the yarn bobbin on the upper part of each of thecarrying bodies, an injector mouthpiece adapted to discharge air andwater through the carrying seat, lever mechanism adapted to press theyarn bobbin into fluid-tight contact with its carrying seat, a valvecontrolling the supply of compressed air, and means such as a couplingrod connecting the lever mechanism with the valve in such a way that thevalve is only opened after the yarn bobbin is resting firmly upon itsseat.

4. Apparatus for conditioning yarn wound into bobbins, comprising ameasuring vessel for measuring the quantity of moistening liquidrequired for anindividual yarn bobbin, a carrying body for an individualyarn bobbin, a pipe for conveying liquid from the measuring vessel tothe carrying body, a pipe for supplying compressed air to the carryingbody, the pipe for liquid opening centrally inside the compressed airpipe in such a manner as to form an injector, a carrying seat for theyarn bobbin on the upper part of the carrying body, an injectormouthpiece adapted to discharge air and water through the carrying seat,lever mechanism including a cam comprising an eccentric element adaptedto press the yarn bobbin into fluid-tight contact with its carrying seatand a concentric element adapted to produce a self-locking efiect, avalve controlling the supply of compressed air, and means such as acoupling rod connecting the lever mechanism with the valve in such a waythat the valve is only opened after the yarn bobbin is resting firmlyupon its seat, and the concentric element of the. cam has come intooperation.

5. Apparatus for conditioning a plurality of yarn bobbinssimultaneously, comprising a tiltably supported elongated distributingvessel, partitions subdividing the distributing vessel into a number ofcompartments corresponding to the number of bobbins to be treated, thepartitions being formed with apertures at their lowest points by whichthe compartments all communicate with one another, a measuring vesselfor supplying a predetermined quantity of moistening liquid to thedistributing vessel, carrying bodies adapted to support the individualyarn bobbins and admit moistening fluid thereto, separate pipes forconveying liquid to the individual carryingbodies, each compartment ofthe distributing vessel being adapted to empty its contents into one ofthese pipes when the distributing vessel is tilted, and separatecompressed air pipes leading to the individual carrying bodies. a

6. Apparatus for conditioning yarn wound on tubes to form bobbins,comprising a measuring vessel for measuring the quantity of moisteningliquid required for an individual yarn bobbin,

a carrying body for an individual yarn bobbin,"

a pipe for conveying liquid from the measuring vessel to the carryingbody, a pipe for supplying compressed air to the carrying body, aspindle mounted on the carrying body to carry the bobbin, latchesrockably mounted in the spindle, the bobbin tube being formed withapertures adapted to engage with the latches, and a manually rotatableeccentrically slotted disc for oscillating the latches at will into aposition in which they engage in the said apertures and into a positionin'which they are located wholly within the spindle.

7. Apparatus for conditioning yarn wound on tubes to form bobbins,comprising a measuring vessel for measuring the quantity of moisteningliquid required for an individual yarn bobbin, a carrying body for anindividual yarn bobbin, a pipe for conveying liquid from the measuringvessel to the carrying body,.a pipe for supplying compressed air to thecarrying body, astopper of resilient impervious material such as indiarubber adapted to be applied to the top of the bobbin tube, and meansfor pressing the stopper firmly on to the yarn tube against the pressureof the compressed air in the tube.

8. Apparatus for conditioning a plurality of yarn bobbinssimultaneously, comprising a tiltably supported elongated distributingvessel, partitions subdividing the distributing vessel into a number ofcompartments corresponding to the number of bobbins to be treated, thepartitions being formed with apertures at their lowest points by whichthe compartmentsall communicate with one another, a measuring vessel forsupplying a predetermined quantity of moistening liquid to thedistributing vessel, carrying bodies adapted to support the individualyarn bobbins and admit moistening fluid thereto, separate pipes forconveying liquid to the individual carrying bodies, each compartment ofthe distributing vessel being adapted to empty its contents intoone ofthese pipes when the distributing vessel is tilted, 150

separate compressed air pipes leading to the individual carrying bodies,valves controlling the supply of compressed air, means for venting thecompressed air remaining in the apparatus after the moistening liquidhas been forced through the yarn, and switching plant adapted to bringvessel, the tilting of the distributing vessel, the

opening of the compressed air valves, and the venting of the residualcompressed air.

9. Apparatus for conditioning yarn wound on tubes to form bobbins,comprising a carrying vessel adapted to enclose an individual yarnbobbin in a fluid-tight manner, a measuring vessel for measuring thequantity of moistening liquid required for an individual yarn bobbin, apipe for conveying liquid from the measuring vessel to the carryingvessel, a pipe for supplying compressed air to the carrying vessel,means for admitting the liquid and compressed air to the space betweenthe external surface of the bobbin and the internal surface of thecarrying vessel, the bobbin tube being perforated to enable compressedair that has passed. inwards through the yarn to escape into it, andmeans for sealing the ends of the bobbin tube against the compressed airin the interior of the carrying vessel, the said sealing means and thecarrying'vessel being formed with apertures registering with one anotherthrough whichgair can escape from the interior of the bobbin tube to theatmosphere.

10. Apparatus for conditioning yarn wound on tubes to form bobbins,comprising a doublewalled carrying vessel adapted to enclose anindividual yarn bobbin in a fluid-tight manner, the inner wall of thecarrying vessel being perfo rated, a measuring vessel for measuring thequantity of moistening liquid required for an invidual yarn bobbin, apipe for conveying liquid from the measuring vessel to the carryingvessel, a pipe liquid .reverse direction, to close f or supplyingcompresed air to the carrying vessel, means for admitting the liquid andcompressed air to the space between the double walls of the carryingvessel, the bobbin tube being perforated to enable compressed air thathas passed inwards through the yarn to escape into it, and means forsealing the ends of the bobbin tube against the compressed air in theinterior of the carrying vessel, the said sealing means and the carryingvessel being formed with apertures registering with one another throughwhich air can escape from the interior of the bobbin tube to theatmosphere.

11. Apparatus for conditioning yarn wound on tubes to form bobbins,comprising a double-walled carrying vessel adapted to enclose anindividual yarn bobbin, the inner wall of the carrying vessel beingperforated, a lid adapted to close the carrying vessel in a fluid-tightmanner, a stopper in the middle of the lid adapted to seal the upper endof the bobbin tube in a fluid-tight manner from the interior of thecarrying vessel, the lid and the stopper being formed with aperturesthrough which the. interior of the bobbin tube communicates with theatmosphere, a measuring vessel for measuring the quantity of moisteningliquid required for an individual yarn bobbin, a pipe for conveyingliquid from the measuring vessel to the carrying vessel, a pipe forsupplying compressed air to the carrying vessel, a valve controlling thesupply of compressed air, means for venting the compressed air remainingin the apparatus after the moistening liquid has been forced through theyarn, and lever mechanism for pressing the lid and stopper firmly on tothe carrying vessel and bobbin tube and subsequently opening thecompressed valve, and same lever mechanism being adapted, when actuatedin the the compressed air valve, then vent the compressed air remainingin the apparatus, and then release the lid and stopper.

. CHARLES FRIEDRICH DULKEN.

